Charleston church shooter Dylann Roof confessed to killing nine people at Emanuel AME Church, ABC News reports. He said he wanted to start a “race war.” This comes as a roommate said he was big into “segregation.”

Dalton Tyler said Roof had been “planning something like that for six months.”

Tyler said, “He was big into segregation and other stuff.” “He said he wanted to start a civil war. He said he was going to do something like that and then kill himself.”

Dylann Storm Roof was arrested in Shelby, North Carolina on Thursday. Among the deceased are State Sen. and Pastor Clementa Pinckney, Myra Thompson and Tywanza Sanders.

NBC News reports Roof told police he almost decided against shooting the church-goers “because everyone was no nice to him.”

Dylann Roof reportedly purchased the gun used in the shooting in April.

My two cents: Shouldn’t his roommate have alerted someone about this animal’s plans? Doesn’t this amount to criminal negligence?